27 guns, and I have no clue as to my cleaning frequency. If it looks dirty and I think it's time for a cleaning, that's when it gets done. Some I shoot frequently , some only get shot once a year, some I have not shot in years My Black powder guns need to be cleaned after each session for sure, and my .22 rimfires get cleaned with much more frequency. My AK47, I don't think i've ever cleaned it since I bought it in 2011 and it's got about 1500 rounds through it.